Main concepts of text linguistics

Intentionality
Intentionality concerns the text producer's attitude and intentions as the text producer uses cohesion and coherence to attain a goal specified in a plan. Without cohesion and coherence, intended goals may not be achieved due to a breakdown of communication. However, depending on the conditions and situations in which the text is used, the goal may still be attained even when cohesion and coherence are not upheld.
"'Want I carry you on my back?'"
Even though cohesion is not maintained in this example, the text producer still succeeds in achieving the goal of finding out if the text receiver wanted a piggyback.
Acceptability
Acceptability concerns the text receiver's attitude that the text should constitute useful or relevant details or information worth accepting. Text type, the desirability of goals and the political and sociocultural setting, as well as cohesion and coherence, are important in influencing the acceptability of a text.
Text producers often speculate on the receiver's attitude of acceptability and present texts that maximize the probability that the receivers will respond as desired by the producers. For example, texts that are open to a wide range of interpretations, such as "Call us before you dig. You may not be able to afterwards" require more inferences about the related consequences. This is more effective than an explicit version of the message that informs receivers the full consequences of digging without calling, because receivers are left with great uncertainty as to the consequences that could result; this plays to people's risk aversion.
Informativity
Informativity concerns the extent to which the contents of a text are already known or expected as compared to unknown or unexpected. No matter how expected or predictable content may be, a text will always be informative at least to a certain degree due to unforeseen variability. The processing of highly informative text demands greater cognitive ability but at the same time is more interesting. The level of informativity should not exceed a point such that the text becomes too complicated and communication is endangered. Conversely, the level of informativity should also not be so low that it results in boredom and the rejection of the text.